Stockholm Stock Exchange (OMX) Market Holidays. When is the next Stockholm Stock Exchange holiday? Is OMX closed today?. The OMX Stockholm 30 Index is a major stock market index which tracks the that have the largest volume of the trading on the Stockholm Stock Exchange. Companies below are listed on Nasdaq Stockholm. For viewing other markets or segments, please use the links in the right column. US Economy Adds K Jobs In June. More than companies have been listed for trading. About Us About us First North Disclaimer Contact Privacy Statement About cookies. Swedish Economy Expands 0. Show more Opinion link Opinion. Are you already subscriber?